Biomedical used multiple-channel hemispherical focused ultrasound phased array apparatus

Abstract

The invention is to a biomedical used multiple-channel hemispherical focused ultrasound phased array apparatus. The invention comprises of a graphic user interface, digital multiple channel phase control kernel, multiple channel driving system, and impedance matching module, power feedback device, as well as the hemispherical low-frequency ultrasound phased array. The invention also serves as a good platform reference to develop a focused ultrasound system in the assisted brain drug delivery application.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a biomedical used ultrasound phased array apparatus, particularly to a biomedical used multiple-channel hemispherical focused ultrasound phased array apparatus.[0003]2. Description of the Prior Art[0004]Due to most of human brain surgery is one kind of the invasive-type surgery at present, which accompanies much of therapy risk. Especially most of human brain surgery will destroy the blood-brain barrier, and generates the symptoms such as intracerebral hemorrhage, cerebral vascular accident, infection, destruction of normal nerve fiber and other temporary symptoms, thus the noninvasive therapy is become an important consideration for the medical therapy of human brain. The above-mentioned blood-brain barrier is arranged by the endothelial cell of the brain blood capillary wall mainly, which can transport the material required by the human brain tissue from the blood to the human brain by diffusi...

AI Technical Summary

Benefits of technology

[0010]The invention relates to a biomedical used multiple-channel hemispherical focused ultrasound phased array system. The invention comprises of a graphic user interface (GUI), digital multiple channel phase control kernel, multiple channel driving system, phase and wave generator, phase adjustment circuit, power amplifier, impedance matching module, power feedback device, as well as the hemispherical low-frequency ultrasound phased array. It not only can improve the focusing efficiency effectively, but also can disperse the cost of ultrasound phased array, and increase the practicability as well as reduce the manufacturing cost greatly.

[0020]The invention combines the peripheral interface controller (PIC) and complex programmable logic device (CPLD), which can alter the output frequency arbitrarily, and achieve the phase displacement of multiple channels accurately. The cost of the ultrasound phased array can be reduced through low-cost integrated digital circuit and peripheral interface controller (PIC).

Problems solved by technology

Due to most of human brain surgery is one kind of the invasive-type surgery at present, which accompanies much of therapy risk.

However, due to the focusing ability of low-frequency focused ultrasound system is not reached to the ideal state yet, and the focusing efficiency of single focused ultrasound system is unable to reach to the medical therapy effectively, present ultrasound device is still unable to obtain actual medical efficiency, thus there is a great improvement space.

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